不可数名词，且第一次出现，故使用零冠词。 7)For the first time man was able to set foot on the moon.(1991-19) A.in history B.on history C.since history D.out of history 答案：A。 解题：当history意为“历史"(all the things that happened in the past,especially the political,. social,or economic development of a nation)时为不可数名词，使用零冠词，如：throughout history,recent/modemn history,early/ancient history,recorded history (-history since people wrote facts down),local history,American/British etc.history,human history,period in/of history, the first time in history(-the first time that something has ever happened),change the course of history(=do something that has a lot of important effects),steeped in history (=closely connected with important events in history)(http:www.ldoceonline..com/dictionary/history),故答案为in history. This document is produced by trial version of Print2Flash.Visit www.print2flash.com for more information